Intermittent gearing



March 4, 1930. cHRxsTlANsEN INTERMITTENT GEARING Filed April l2, 1926 2Sheets-Sheet l March 4, 1930- E. cHRxsTlANsEN INTERMITTENT GEAHING FiledApril 12, 1926 2 Sheets-Sheet Patented Mar. 4, 1930 unirte sTATEsParana? carica EJNAB CHRISTIANSEN, BIRMINGHAM, ENGLAND, ASSGNOR OFONE-HALF TO CARL OSCAR ERICSSON, OF BIRMINGHAM, ENGLAND INTERVITTENTGEARING AppIication filed April 12, 1926, Serial No. 101,444, and inGreat Britain April 18, 1925.4

This invention comprises improvements in means for intermittently'Amoving a revolving member and particularly relates to such means for usein machines for moulding pie casings or the like.

According to the present improvements, a revolving member or table isrotated by means of a pin on one revolving member engaging in a slot inthe other revolving member and means are combined therewith for holdingthe member or table at the end of each intermittent movement, whichcomprise pins on one revolving member which are engaged by a partannular groove 1n the other revolving` member. By these means a somewhatheavy and quickly operated table or member can be stopped and heldstationary at the end of each intermittent movement with a minimum ofwear or damage to the mechanism. The table which is intermittentlyrevolved is also supported in the improved manner hereinafter described.

Referring to the drawings: Figure 1 is a perspective view of a machineconstructed according to this invention.

Figure 2 is a sectional plan of the box table, th'e section being takenon line a@ fr of Figure 3, a being the front of the machine.

Figure 3 is a section on line y jz/ of Figure 2. Figure 4 is a sectionon line a a of Figure 2. Figure 5 is an underside view of the drivingdisc hereinafter referred to.

yFigure 6 is a plan view of a detail hereinafter referred to, and

Figure 7 is a side view of the machine looking in the direction of arrowB, nigure 1. According to a convenient embodiment of `this invention,the moulding tool 1 is recip e rocated through the medium of a drivingshaft 32 carrying the fly wheel 25 which is geared to an electric motor2 or any other convenient source of power. The moulding or other tool isoperated by the said driving crank shaft 32 so that the moulding tool isoperated every rotation. The electric motor 2 drives a shaft 26 by meansof chain transmission 27, and such shaft transmits the drive to the saiddriving shaft carrying the flywheel 25 through the medium of worm 28 andworm wheel 29. A stationary box table 3 is carried by the vmachineframe, and such box table carries a revolving table 4. This revolvingtable has a central spindle 5 which passes through an inwardly directedboss 8 carried by the top wall of the box table 3, and the end of this'spindle 5located in the box table 3 carries a cast metal or other disc6. The underside of the revolving table 4 is supported on spring pressedmembers or rollers 7 let into the top surface of the box table 3, suchrollers 7 holding the revolving table 4 from the box table and'maintaining the said cast metal disc 6 against, preferably, ballbearings located between such disc and the end of the said inwardlydirected boss 8, through which the said revolving table spindie passes.Each said spring pressed roller is conveniently mounted in a bifurcatedmember 9 which is slidably mounted in a tubular member 10 fixed in thetop surface of the box table 3, a spiral spring 11 being located betweenthe inner end of this tubular member and the bifurcated member. Anannular groove is formed in -the' underside of the tabl; 4 for receivingthe spring pressed rollers The revolving table 4 may, for-instance, beadapted to receive six moulds or tins 12, and is therefore required tobe moved one sixth of a revolution for each stroke of the mouldingtool 1. For this purpose six radial slots 13 are formed in the castmetal disc 6, and a pin or roller 14 on another revolving driving member15 is adapted to ent-er one slot 13 and move the table 4 round 'onesixth of a revolution before leaving this slot 13. This latter revolvingdriving member 15 is carried on a spindle 16' mounted in an inwardlydepending boss 17 in the box table 3, and comprises an arm 18 passingfrom one side of the spindle, the sides of which arm curve outwardly toform a sector 19 on the other side of the spindle. The driving pin orroller 14 is carried by the top surface of the said arm 18, and a groove20 is formed in the said sector also on the top surface. Six pins orrollers 21 are mounted on the underside of the said cast metal member 6intermediate the radial slots 13. When the revolving driving member 15is rotated, the driving pin 14 engages a radial slot 13 and moves thecast metal disc 6 one sixth of a revolution. As the pin 14 is leavingthe slot 13 one of the said pins 21, intermediate the radial groove 13,enters the groove 2O in the sector portion 19 of this driving revolvingmember 15, and therefore locks the revolving table l against furthermovement. As the groove 2O in this sector leaves the pin 21, the drivingpin 14 enters the next succeeding radial slot 13. It will therefore Y beseen that the table 4 can only be moved an exact amount and ispositively locked against rotation during the moulding operation anduntil the revolving table is again to be rotated. The driving member 15is conveniently driven through the medium of a horizontal shaft 22located in the box table 3 which is driven by chain 30, and chain wheel31 from the shaft 26. vThe said horizontal shaftQQ Jfurther transmitsthe drive by means of a Worm 23 and a Worm Wheel 24. The box table 3formsan oil box, thus providing for the mechanism to run in an oil bath.The bottom of the box table may form the top of the pedestal 27.

Claims:

1. Means 4for intermittently moving :airevolving table comprising arevolving driving member, a pin or roller carried thereby, a spindle onwhich the revolving table isV mounted, a stationary table for themachine in which the spindle is journalled, spring pressed anti-frictionmembers for resiliently supporting the revolving table on the stationarytable, a disc having radial slots mounted on the said spindle with whichslots l the said pin or roller engages 'and means for holding therevolving table in a predetermined position duri'ng'the stationaryperiod.

2. Means for intermittently moving a revolving table comprising arevolving driving member, a pin or roller Vcarried thereby, a spindle onWhich the revolving table is mount-ed, a lstationary table for themachine in Which the spindle is jo'ur'nalled, spring pressed plungerscarrying anti-friction rollers and mounted in the said stationary tablefor bearing against the underside of the revolving table, a disc havingradial slots mounted on said spindle with which said slots in the pino1'- roller kengage and means for holding the revolving table in apredeteriiined position during the stationary perior.

3. Means fer intermittently moving a revolving member comprising ahorizontal revolving table, a stationary table on the upper side ofwhich "the revolving t'abie is mounted and on the underside el which arelocated the means for intermittently moving the revolving table, a`'sp'ind'e' on which the revolving table is mounted and Which passesthrough `a bess `depending 'from the stationary table, 'a disc liaifingralial'slo'ts mounted on said spindle 'on the underside of the sta Ytionary table, a driving member mountedr member carrying the bearingsfor the last mentioned spindle fixed to the stationary table,afvvormrwheel on the said driving member, and a toothed Wheel on thespindle carrying the Worm., .Y l

-In Witness vvhereof Ir have signed this specification;

` v EJNAR CHRISTIANSEN.

